IM Alg1.7.18 Practice: Applying the Quadratic Formula (Part 2)
Mai and Jada are solving the equation using the quadratic formula but found different solutions.
If this equation is written in standard form, , what are the values of , , and ?Mai wrote: Jada wrote:
Do you agree with either of them? Explain your reasoning.
The equation represents the height, in feet, of a potato seconds after it was launched from a mechanical device. Write an equation that would allow us to find the time the potato hits the ground.
Solve the equation without graphing. Show your reasoning.
Priya found and as solutions to . Is she correct? Show how you know.
Lin says she can tell that and are perfect squares because each expression has the following characteristics, which she saw in other perfect squares in standard form:
Show that each expression has the characteristics Lin described.
Write each expression in factored form.
What are the solutions to the equation ?
Solve each equation by rewriting the quadratic expression in factored form and using the zero product property, or by completing the square. Then, check if your solutions are correct by using the quadratic formula.
Here are the graphs of three equations. Match each graph with the appropriate equation.
The function is defined by . What are the -intercepts of the graph of ?
Find the coordinates of the vertex of the graph of . Show your reasoning.